Open AccessQuantitative Impact and Research on Water Supply Management and Demand in Beijing under the WEAP Model
Author(s) -
Yang Liu,
Meng Hao,
Qingyi Cao,
Keling Liu,
Liangpeng Xiao,
Pei Lin,
Xiaoshi Wu
Publication year - 2020
Publication title -
iop conference series. earth and environmental science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.179
H-Index - 26
eISSN - 1755-1307
pISSN - 1755-1315
DOI - 10.1088/1755-1315/514/2/022055
Subject(s) - beijing , water resources , water supply , resource (disambiguation) , supply and demand , demand management , water scarcity , water resource management , population , environmental economics , business , natural resource economics , environmental science , environmental engineering , economics , china , computer science , microeconomics , geography , ecology , computer network , archaeology , sociology , biology , demography , macroeconomics
Predicting the future water supply and demand is an important basis for achieving optimal water resource allocation and serves as an effective methodology to solve the imbalances between water supply and demand in cities and achieve long-term stable supply and efficient water resource utilization. In this study, we use the water evaluation and planning (WEAP) model to quantitatively analyze the effects of the water resource policies on the balance between the supply and demand of water resources in Beijing and predict the water demand and shortages in Beijing from 2019 to 2035. The simulation results indicate that at the watershed scale, different levels of water shortage can be observed in the five major watersheds under different scenarios. By 2035, the unmet demand in the Beiyunhe river basin will be the most serious, accounting for ⩾45.48% of the total unmet demand. The policy constraints play a crucial role in alleviating the supply-and-demand imbalance of water resources. Different policies can be used to reduce the total water demand; however, the population growth control policies exhibit the greatest effect on the alleviation of water resource shortage in Beijing and can reduce the water demand by 3.42 million m 3 when compared with that in a scenario without any control policy. The results of this study can provide important references to solve the urban water resource supply and demand imbalances and realize rational allocation of the water resources.